1 GILDAS Image Header Editor

	Use this panel to view and change the values stored in a GILDAS
	Image or Table. The Header is divided in sections, each of them 
	are accessed through a SubPanel.
	The Go Button will Update the header and remove the Panel.

	Use the Browser (push the "FILE" button) to select the image's filename
	at start.

2 HDS%GENE 
	is an Integer describing the Length of general section
2 HDS%NDIM 
	is an Integer describing the Number of dimensions(Rea DOnly)
2 HDS_1
	Conversion formulae for the 1st axis:
	The conversion from pixel number to User Coordinates is based on a
	linear conversion formula on each axis (plus projection information
	if the Projection Section is defined).
	The 3 values to enter are respectively:
	Reference pixel, Value at reference pixel, Increment.
	Note that the increment must be in RADIANS when a projection
	system exists (see projection section). In that case, the Reference
	Pixel and the Value at reference pixel, on every axis pertaining to
	the projection, must describe the position relative to the center
	of projection (usually, the center of projection is at some reference
	pixel and the corresponding Value is just 0 -- in radians) 
2 HDS_2
	Conversion formulae for the 2nd axis:
	See help for the 1st axis.
2 HDS_3
	Conversion formulae for the 3rd axis:
	See help for the 1st axis.
2 HDS_4
	Conversion formulae for the 4th axis:
	See help for the 1st axis.
2 HDS%DIM 
	is an Integer[4] describing the Dimensions(Rea DOnly)
2 HDS%CONVERT 
	is a Double[3,4] describing the 
	Conversion formulae for the 4 axis:
	on each axis: Reference pixel, Value at reference pixel, Increment.
	Note that the increment must be in RADIANS when a projection
	system exists (see projection section). In that case, the Reference
	Pixel and the Value at reference pixel, on every axis pertaining to
	the projection, must describe the position relative to the center
	of projection (usually, the center of projection is at some reference
	pixel and the corresponding Value is just 0 -- in radians) 
2 HDS%BLAN  
	is an Integer describing the Length of blanking section
2 HDS%BLANK 
	is a Real[2] describing the Blanking and tolerance
2 HDS%EXTREMA 
	is an Integer describing the Length of extrema section
2 HDS%MAX 
	is a Real describing the Maximum
2 HDS%MIN 
	is a Real describing the Minimum
2 HDS%WHERE 
	is an Integer[4,2] describing the Position of max and min
2 HDS%DESC 
	is an Integer describing the Length of units 
	and coordinate system section
2 HDS%UNIT 
	is a Char*12 describing the Image unit
2 HDS%UNIT1 
	is a Char*12 describing the First axis type
2 HDS%UNIT2 
	is a Char*12 describing the Second axis type
2 HDS%UNIT3 
	is a Char*12 describing the Third axist ype
2 HDS%UNIT4 
	is a Char*12 describing the Fourth axis type
2 HDS%SYSTEM 
	is a Char*12 describing the Coordinate system
2 HDS%POSI 
	is an Integer describing the Length of position section
2 HDS%SOURCE 
	is a Char*12 describing the Source name
2 HDS%RA 
	is a Double describing the RightAscension
2 HDS%DEC 
	is a Double describing the Declination
2 HDS%LII 
	is a Double describing the Galactic longitude
2 HDS%BII 
	is a Double describing the Galactic latitude
2 HDS%EPOCH 
	is a Real describing the Epoch of coordinates
2 HDS%PROJ 
	is an Integer describing the Length of projection section
2 HDS%PTYPE 
	is a string describing the Projection type. 
2 HDS%A0 
	is a Double describing the first coordinate of projection center
2 HDS%D0 
	is a Double describing the second coordinate of projection center
2 HDS_A0 
	is a Character string ( format HH:MM:SS.ss ). Gives the first
	coordinate of the PROJECTION CENTER. Will be converted into 
	header internal  value (Double Precision Radians). 
2 HDS_D0 
	is a Character string ( format +DDD:MM:SS.ss ). Gives the 
	second coordinate of the PROJECTION CENTER. Will be converted 
	into header internal  value (Double Precision Radians). 
2 HDS%RA 
	is a Double describing the first coordinate of projection center
2 HDS%D0 
	is a Double describing the second coordinate of projection center
2 HDS_RA 
	is a Character string ( format HH:MM:SS.ss ). Gives the first
	coordinate of the SOURCE POSITION. Will be converted into header
	internal  value (Double Precision Radians). 
2 HDS_DEC 
	is a Character string ( format +DDD:MM:SS.ss ). Gives the 
	second coordinate of the SOURCE POSITION. Will be converted 
	into header internal  value (Double Precision Radians). 
2 HDS%ANGLE 
	is a Double describing the position angle of projection
2 HDS%X_AXIS
	is an Integer describing the First projected axis
2 HDS%Y_AXIS
	is an Integer describing the Second projected axis
2 HDS%SPEC 
	is an Integer describing the Length of spectroscopy section
2 HDS%LINE 
	is a Char*12 describing the Line name
2 HDS%FREQRES 
	is a Double describing the Frequency resolution
2 HDS%FREQOFF 
	is a Double describing the Frequency offset
2 HDS%RESTFRE 
	is a Double describing the Rest Frequency
2 HDS%VELRES 
	is a Real describing the Velocity resolution
2 HDS%VELOFF 
	is a Real describing the Velocity offset
2 HDS%F_AXIS 
	is an Integer describing the Frequency/Velocity axis
2 HDS%BEAM 
	is an Integer describing the Length of beam section
2 HDS%MAJOR 
	is a Real describing the Major axis of beam
2 HDS%MINOR 
	is a Real describing the Minor axis of beam
2 HDS%PA 
	is a Real describing the Position angle of beam
